Oil burner



May 28, 1940. R. M. RUNGE Er AL l OIL BURNER Filed oct. s1, 1958 "7sheets-sheet l1 ATTORNEY May28, 1,940. R. M'. RUNGE Erl/u. 2,202,718

OIL BURNER 7 Sheets-Sheet 2 Filed Oct. 3l, 1938 lNvENTo @fm/asf 5.P//scz/cc/ ATTORNEY v May 28, 1940. R. M. RUNGE ET AL- OIL BURNER FiledOct. 31, 1938 '7 Sheets-Sheet 5 ATTORNEY May 28, 1940. R. M. RUNGE Er A;2,202,712

OIL BURNER Filed Oct. 5l, 1938 7 Sheets-Sheet 4 jj 45 i f5?? 42 I Q0 iCil INVENTORS ATTORNEY R. M. RUNGE Er AL 2,202,718

OIL BURNER May 28, 1940.

Filed Oct. 3l, 1958 7 Sheets-Sheet 5 ATTORNEY May 28, 1940. n. M. RUNGEEr AL 2,202,718

OIL BURNER Filed 001'.. 31, 1938 7 Sheets-Sheet 6 Ik r ATTORNEY May 28,1940. R. M. RUNGE Er AL OIL BURNER Filed Oct. 3l, 1938 7 Sheets-Sheetv'f ATTQRNEY Patented May 28, 1940 PATENT l OFFICE OIL BURNER Richard M.Runge and Ernest B. PascuccL Meriden, Conn., assignors tc The MillerCompany, Meriden, Conn., a ,corporationA of Con- .necticut Applicationoctober a1, 193s, serial No. l237,826

2s claims. (el. 126-45) The present invention relates to oil burners,.and is more particularly directed toward oil burners of the wick typeemploying forced draft.

In oil burners of the type contemplated the draft is produced by anelectric motor which operates a blower forcing the-air through theburner or burners all the time that the motor is in. operation. Theforced draft passes up by the wick and this makes it possible todispense with lo. a chimney so that the burner may be close tothe gratewhich supports the utensil to be heated, or may be close to the bottomof an oven.

According -to the present invention each burner I is provided with asnuffer which can be either 1:; held a sufcient distance above the wickso that a flame may be propagated, or which may be lowered to apositionto extinguish the flame. Suitable mechanism is provided whereby thesnuffer is releasable so as to drop to cover the top of the `wick andcut off the air supply from the wick whereby the flame is extinguished.These releases are interconnected with the motor and air blower in sucha way that upon failure of 'motor operation the releases disable thesnufferholding means so that the snuffer drops. This affords aisafetyfactor which insures that there will be no Apossibility of the burnercontinuing to burn after the blower has ceased operation, as, vforexample, upon power failure.

30 Other l:aindfurther ,objects of the invention will appear as thedescription proceeds.

- The accompanying drawings show, for purposes yof illustrating thepresent invention, several embodiments in which the invention may 35takeform, it being understood that the drawings are illustrative of theinvention rather than lim-- iting the same.

11n these drawings:

Figure l. `is a front elevational view of a flat top` oil stoveillustrating burners under the top of `the stove and under the oven;

Figure 2 is aside elevational view of the stove of Figure 1;

Figure 3 is a perspective view illustrating a battery of four burnersoperated from a single motorand blower and having manual snuffer liftersand automatically controlled snuffer releases, the snuifers being shownin the upper or burning position;

Figure 4 is a vertical sectional view taken on the Y line 4--4 ofFigures 3 and6 illustratingI two burners, the one at the left being inthe burning position, ,the 011e at the right with the parts in pcsitienfer :lighting the wiel: with a match;

Figure 5 is a sectional View taken on the line E-.S lof Figure 4,;

Figure 6 is an inverted plan view taken on the line 6-6' of FigureVIL1parts being in elevation;

Figure 7 is a View similar to Figure 4, but showing the burner in thestop or olf lposition with the snuifer lowered;

Figure 8 is a sectional View taken on the line 8-8 of Figure 7, thedot-and-dash line position ofA parts indicating the positions assumedpreparatory to lighting the burner with a match;

Figure 8A is a fragmentary elevational view at an enlarged scale showinga detail;

Figure 9 is a longitudinal sectional Viewl through a modified form ofconstruction, the parts being shown in full lines in the burningposition, the dotted line indicating the position CII assumed duringlighting with a match and 4the dot-and-dash line indicating the manual`release of the snuffer;

Figure 10 is a fragmentary View taken 'on the line VIll-lll ofFigure 9;

Figure 11 is a fragmentary longitudinal sectional view through amodified form of construction in which the snuffer is lifted by thegovernor on the motor;

Figure 12 is a fragmentary sectional view on the line l2--l2'of Figure11;

Figure 13 is a top plan view of a battery of four burners arranged-radially with respect to a central blower and air-chest, the full linesin.- dicating position of parts when the stove is not operating, thedot-and-dash lines indicating parts in burning position;

Figure 14 is a vertical sectional View taken 0n the broken line l4-I4 ofFigure 13, the parts being in the burning position;

Figure 15 is a fragmentary sectional View taken on the line I5-I5 ofFigure 13;

Figure 16 is a fragmentary enlarged plan View taken in the direction ofthe arrow I6 of Figure 15;

, Figure 1'7 is a vertical sectional view through a single burner unitwith the motor mounted underneath the burner, the parts being in theburning position; and

Figure '18 is a perspective view of a space heater employing the burnersshown herein.

Figures l and 2 illustrate aat top stove of typical dimensionsy andappearance and might be a chassis designed to use the lconventionalburners of a gas stove or the heating units of an electric stove. vIt ishere illustrated, however, as housing the burners for a forced draft oilstove. These burners Amay be carried directly below the oven 20a. Theupper burners are diagrammatically illustrated at 2| and the ovenburners at 22. It will be noted that these burners with associatedforced draft mechanism (illustrated in dotted lines) form a very shallowstructure. In fact it occupies substantially the same space as theburners of a gas stove so that the same chassis may be used for the oilstove, and at the same time have the smooth top and the desirablestorage cabinets which go in gas and electric stoves. All the controlsare brought out to the front of the stove and the motor for supplyingthe draft and fuel tank are placed behind the stove.

In the arrangement shown in Figures 3 to 8, inclusive, there are fourcomplete burner units connected to a single air-chest and-provided withair by a single motor operated blower. The motor for operating theblower is indicated at 30, Figure 4. It is carried in a housing 3|apertured at the outer end, as shown at 32, to admit air and havingan'inner aperture 33 to permit air to be driven into the air-chest by amultiple bladed fan indicated at 34, this fan being driven by a shaft35. rIhe fan spider has a cone bearing surface indicated at 36, and theshaft carries a conical member 31 pressed toward the fan body by springs38 carried on pins 39. Balls 40 are interposed between these two conicalsurfaces and when the motor is idle the parts are in the position shownin Figure 7, when the motor is running at speed these parts justdescribed are in the positions shown in Figures 4 and 6. The fan orblower 34 is received in a box 4| which is connected With two forwardlyextending conduits or air-chests 42. The openings between the box 4| andthese conduits or air-chests are covered with a screen indicated at 43,which serves to bring about a more even ow of air throughout the entirecross sectional area of each of the air-chests 42.

Each of these air-chests 42 supports two burner units which may beidentical. The top or cover 44 of the air-chest is provided with largeopenings 45 having aligning flanges 46 extending upwardly to fit theinside of a double walled wick tube 41 carrying a cylindrical wick W.Outside this Wick tube the cover plate 44 is provided with a number ofperforations 48 shown more clearly in Figure 6. These are adapted topass air up into an outer air vtube 49 concentric with the wick tube.

The wick tube is provided with a perforated diaphragm 59 which has aguide tube 50' to support an axially disposed rod This rod extends upthrough a flame spreader 52 and carries an inverted cup-shaped snuier 53larger in diameter than the flame spreader and slightly larger than theupper outer wall of the wick tube. Between the diaphragm 50 and amespreader the wick tube carries `an air distributor indicated at 54.

In the particular constructions shown herein, except Figure 17, theflame spreader and air distributor are separable.k They may, however, beunitary somewhat as shown in Wilcox Patent 1,717,484. The separable formof ame spreader and air distributor admits of the lifting of the flamespreader 52 by the shoulder 55 on the rod 5|, as will be apparent bycomparing the position of these parts in the two burners of Figure 4.The purpose of lifting the flame spreader and snuffer to the higherelevation is to provide more room for the insertion of a match to thetop of the wick.

Thevouter air tube 49 is drawn in, as indicated in the drawings, so asto be brought close to the wick tube. It carries a constricted collar 56whose upper edge is close to the top of the wick tube. This constrictedcollar is provided with a row of perforations 51 which is spaced above ashoulder 58 and this shoulder supports a re collar 59 of suitable shapeto divert the flame up toward the grate.

The wick tube is provided with the usual wick lifting mechanismincluding the gears indicated at 60 and shaft indicated at 6|. Each ofthese shafts extends out through the respective outer air tube 49 and isconnected by a suitable universal coupling 62 to an operating shaft 63which extends out through the front of the stove where it is providedwith an operating knob illustrated at 64, Figures 1 and 2. These controlknobs make it possible to conveniently raise and lower the wicks toadjust the ame, or turn it out when burner operation is no longerdesired.

The oil supply tubes are indicated at 65. They extend through couplings66 in the outer air tubes 49 and into the usual couplings 61carried bythe wick tubes.

When the motor is not in operation the speed responsive mechanism is inthe position shown in Figure 7, the parts to be acted on thereby arepushed to the rear of the stove. motor is in operation these parts arepushed toward the front. The cone 31 of the'speed responsive mechanismhas'a ball 68, which bears on a spring which in turn presses against ahorizontal rod or cross bar 1|. Thiscross bar is connected to a plunger12 by a screw 12', and carries adjusting screws'12a and 12b bearing inthe ends of plungers 13 and 14, which extend through the air-chests 42.The plungers 12 and 13 are urged to the rear by springs indicated at 15,while the plunger 14 (disposed between the air-chests) is urged to therear by springs'indi-- cated at 16. 1

The plungers 12 and 13 extend under the two burners mounted on therespective air-chests. They are supported by downwardly bent aperturedlugs 11 carried bythe air-chest cover platey 44, and each rod carries apin 18 (see Figure 8A) adapted to shift a latch '-19 v(pivoted to theguide tube 50') from the position shown in Figure 4 to the positionshown in Figure 7 when the motor stops or the speed is materiallyreduced. The latch is moved to the right, as shown in Figure 4,

by a spring 80 abutting a washer 80a held in.

place by' a pin 80h. The latch isadapted to'cooperate with a shoulder 8|placed near the lower end of the vertically reciprocable carrying rod5|. The lower end of this rod is reduced as indicated at 82.

The snuier rods 5| are adapted to be manually lifted by Aknobs 83extending out through the front of the stove. These knobs are connectedto shafts 84 which extend through the air-chests 42 and are slidablycarried under the cover mem- When theL ber 44 by apertured lugs 85. Eachof the rods v 84 carries two lever arms 86 and 81. When the stove is innormal operation or when it is idle, the shafts 84 are in the angularposition indicated in Figure 8, and the lever arms 86 and 81 are in theposition shown in full lines in Figure 8. The shafts 84 can be movedaxially in their bearings from a mid-position, as shown at the bottom ofFigure 6, to the right, as shown by the shaft 84 at the top `of Figure6, or to the left a similar amount. it possible to select whichrsnuiferlwill be,

'This makes f lifted. The lower end 82 of each .of the snuffer rods isabove a lifter lever 88 pivoted on lugs 89 and having an ,extensionwhich is disposed below the lifter levers 86 or 81. When the rod 84 isin the longitudinal position shown at the bottom of Figure 6 and isturned from the full line position of Figure 8 to the dotted lineposition of Figure 8, both snuifer lifter levers 88 will be swung to thedot-and-dash line position of Figure 8. When the uppervrod 84 of Figure6 is in the longitudinal position indicated in that figure and a,vsimilar turningmovement is made only the upper right hand lever 88 ofFigure 6 will beaffected, and, when the upper shaft 84 of Figure 6 ispushed all the way to the left, .the arm 81 will be moved away from .thecorresponding snuifer lifter lever and the arm 8.6 only will engage itscorresponding snufferliftlng lever. In this. way it is possible toselect which one of the snuifers will be lifted. The extent of liftingis shown in the dot-and-dash line position of Figure 8 and at the righthand burner of Figure 4, wherein it will be seen that the snulfer 53 andthe flame spreader 52 have been lifted to an elevation above the normalburning position.A This facilitates lighting the burner with a match. Totemporarily reduce the air pressure and lessen the tendency to blow outthe match, a trap 9| may be opened by the lifter lever 88.

lIt is, however, possible to light the burner with a match withouthaving the snuffer at a higher l elevation than that shown at the leftof Figure 4, and, of course, where ignition other than that by match islemployed there is no occasion for lifting the flame spreader furtheraway from the wick or for lifting the snuffel' above the normal burningposition, or for the trap.

When the parts are in the position shown in the dot-and-dash lines inFigure 8, the lever 86 is turned far enough to hold the snuffer in theelevated position, so that one need not maintain a grip on the controlknob. As soon as the knob, however, is turned slightly to lower ythesnuffer, the snuffer drops down far enough to bring the shoulder 8| onthe rod 5| against the latch assuming that the latch has been urged tothe right by the speed responsive mechanism above de-k scribed. v

It will thus be seen that one can light' any one or all of the burnersor` can extinguish the flame by turning down the wick and then relightthe burner, and that the entire stove can be put out of operation byswitching off the current to the motor by a convenient switch, such asindicated In the operation vof vthe stove `both air chests aremaintained at a definite and uniform pressure above the atmosphere bythe blower, and should one or more burners be turned off there will bean air leakage around the burners that are turned oif so that it willnot materially interfere with the operation of the burners that arestill burning. This air is blown up through the openings inside andoutside the wick tube in a proportion which can be quite definitelycontrolled by selecting the proper size for theapertures through whichthe air enters as well as the size of the passages through which the airescapes upwardly in passingthrough the air distributor, collar and aboutthe wick. An extremely hot flame is producedby the combustion of thefuel on the wick and the outer re collar'diverts this flame upwardly sothat it can play directly on the oven n or dish to be heated, thel dishbeing supported bya grate 30. usual. 'libe 53 being larger than the wickand covering the wick, lthe flame spreader and air distributor, it isobvious that the wick is very well protected against any foreignymaterial dropping on to it.

In the form shown in Figures 9 and l0 most of the parts are the saine asthose shown in Figures 1 to 8, inclusive, and these common parts willnot be again described, similar reference characters, however, beingapplied to them. Here shoulder 8| of the snuffer lifting rod 5| isengaged by a latching lever |00 pivoted at |0| to a plunger |02 andunder the inuence of spring |03. The plunger |02 is urged to the rightby a spring |02 and is pushed to the left by the speed responsivemechanism, as above described. IThe snuffer lifting operation iseffected by an arm |04 carried on a shaft |05 and movable Aas indicatedin Figure 9. The snuffer can be tripped manually by an arm |06 carriedby the shaft |85. This formof construction is more suitable for aplurality of burners in line with thefan axis, as it eliminatesconsiderable of the mechanism shown in the four burner arrangement ofFigure 3.

In the arrangement in Figures 11 and l2, the speed responsive mechanismoperates on a spring |.0 which in turn pushes a shaft to the left. Thisshaft is provided with a cotter pin I2 engageable with a lifting lever||3vpivoted at H4 and acting to lift the snuffer rod 5| from the dotyand-dash line position to the full line position and to hold it there solong as the motor and blower are in operation. Snuffer lifting vforlighting with a match is effected by a lever indicated at H5. With thisform of construction all manual operation of the snuifer may beeliminated where one desires to effect the lighting without lifting thesnuifer to the extra height, snuffer lifting and lowering being effectedsolely by .the functioning .of` the blower and motor. v

In the form of construction shown in Figures 13 to 16, inclusive, themotor for operating Ithe blower is indicatedat y|2|l andthe -blower at|-2.|. rI'he blower carries weighted members |22 adapted tolife a shaft|23 `up and down according ,toI the speed of the blower. The blower|2|is mounted in a housing |23 which has four outlets .|24 leading to fourburner assemblies, all of which are practically alike. 'Ihe air passingfrom the central blower chamber to the air chest below .each burnerpasses through screens indicated at |25 to diffuse it.

Each of the burner units has a wick, wick tube, air' distributor, flamespreader, snufler, flre collar andconstricted collar, as shown inFiguresl to 8, and the same reference .characters are ema4 ployed. TheConstricted collar 56 is supported onan outer air tube |26 detachablycarried on the top of a cup-shaped air chest forming member |21. Theouter air tube |26 carries bridging members |28 which support the wicktube. The cup-shaped member |21 supports a bridging strap |29 aperturedto receive the snuffer rod guide tube 50 and also carries a pivotedlatch |38 adapted to cooperate with the shoulder 8| of the snuffer guiderod, as will be more clear from Figures 15 and 16. l

The latch |30 has a lost motion pinmand-slot connection |3| with a link|32 anda spring |33 interconnects the latch and link so as to hold thelatch against the snuifer guide rod when the parts are in the positionshown in Figure 16. .The rods |32 are connected with an oscillatoryplate |83 so as to be shifted when the plate is turned ,on its axiseither bythe handle |34 or by the restoring- Spring |35.

When the parts are in the position shown in Figure 13 in full lines thestove is in the idle or non-burning position and all the latches arelifted off the snuifer supporting rods. When the handle is shifted fromthe full line position to the dotand-dash line position of Figure 13,the plate |33 is swung to carry the lever |36, which bears on the upperend of shaft |23, to such a position that the end |31 of the leverenters an opening |38 in the fixed plate |38 which covers the blowerchamber. A spring |39 acts on this lever to withdraw the lever when themotor stops and the weights automatically lower the shaft |23. Themovement of the hand lever |34 has also shifted the links |32 to stressthe springs |33, so that the latches |36 are tensioned to enter underthe shoulders of the snuier rods when the snuffer rods are lifted. Thislifting operation is effected by a control shaft |46 acting on an arm|4| which is adapted to be brought into engagement with the lower end ofthe snuffer rod. In this construction the oil supply lines may beprovided as indicated at |42.

In the arrangement shown in Figure 17 the single burner unit oil stoveis supported in any convenient manner, as, for example, by legsindicated at |56. The motor |l, motor housing |52, fan |53 and speedresponsive mechanism |54 may be substantially the 4same as thatpreviously described in detail. They are mounted on a vertical axis andthe air is blown out through openings |55 in the side wall of the blowerhousing |56. The air is blown out into an air-chest |51` and passesupwardly vthrough l the inside of a burner tube |58 and through an outerair collar |59, these parts being secured together by bridging members|66. The burner tube |58 carries the usual wick, the air distributor |6|and ame spreader |62. The snuer |63 is carried on a rod |64, and isadapted to be held in normal operating position by a lever |65 pivotedat |66 and acted on by the speed responsive mechanism |54. The parts areshown in Figure 17 in the burning position, and in this position thesnuifer |63 is held elevated.

Should the motor stopthe lever |65 will shift to the dot-and-dash lineposition releasing the snuifer, and the snulfer will drop to extinguishthe flame. The snuffer lifter arm is indicated at |67. It is pivoted at|68 and is adapted to be actuated by a button |69. For convenience thewick adjuster and oil supply pipes are omitted from Figure 17. y

Figure 18 showsa heater |10 using two of the burners, such as shown inFigures 1-8, except that the re collar is omitted as there is no need ofconfining the llame to a small area.

It is obvious that the invention may be embodied in many forms andconstructions within the scope of the claims and we wish it tobeunderstood that the particular forms shown are but a few of the manyforms. Various modifications and changes being possible, we do nototherwise limit ourselves in any way with respect v thereto.

What is claimed is:

1. A burner for use in oil stovesv comprising a double walled wick tube,a wick, an air distributor within the wick tube, a flame spreaderextending over and spaced from the wick, an airehest communicating withthe inside of the wick tube, an outer air tube communicating with theair-chest, spaced fromfthe outside of'the wick tube and carrying aconstricted collar terminating close to the upper end of the wick tube,

the wick, releasable rod holding means for sup porting the rod in anelevated position with the snuffer above the wickfwhere it does notinterfere with flame propagation, the rod, when released, dropping tobring the snuffer down to cover the top of the wick to out off the ilowof the air supply from the top of the wick and extinguish the llame.

2. A burner as claimed in claim l; wherein' the flame spreader hasvholes', under the snuier to pass air for cooling the snuffer, this `airflowing out under the periphery of the snuffer to further spread theflame."

3. A burner as claimed in claim 1, wherein the wick tube and outer airtube are supported from the top wall of the air-chest, the wall havingapertures therebetween to pass air into thechamber formed by the wicktube and air tube.

4. A burner as claimed in claim l, wherein the snuffer is imperforate topro-tect the wick against fouling by foreign matter dropped'from above.

5. A burner as claimed in claim 1, wherein the snuffer rod extends downthrough an axially disposed, xed guide tube.

6. A burner as claimed in claim 1, wherein thev snuffer rod extends downthrough an axially disposed, fixed guide tube, and the holding means forthe rod is in the form of a spring pressed latch co-operable with ashoulder on therod.

7. A burner as claimed in claim l, wherein vthe snuffer and flamespreader and air distributor are upwardly removable. .5

8. A burner as claimed in claim 1,- wherein the constricted collar isupwardly removable past the snuffer.

9. A burner as claimed in claim 1 having a fire collar outside theconstricted collar terminating adjacent the top of the wick to limit thespread of the flame.

10. A burner as claimed in claim 1 having a fire collar outside theconstricted collar termi-' nating adjacent the top of the wick to limitthespread of the flame, the constricted collar beingperforated to passair into the fire collar. y

11. A burner as claimed in claim 1 having a re collar outside theconstricted collar provided with a lower divergent portion and an upperconvergent portion extending above the snuffer, the re collar receivingair through holes in the constricted collar and diverting the llameupwardly and inwardly over the snuifer.

l2. A burner as claimed in claim 1, wherein the flame spreader ismovable independently of the air distributor and having manuallyoperable means for lifting the snniler and the flame spreader above thenormal or burning position,

so as to provide additional space for the escape of air and for theinsertion of a match.

13. A burner as claimed in claim 1, wherein the flame spreader ismovable independently of the air distributor and having manuallyoperable means for lifting the snuffer and the llame spreader above thenormal or burning position,

so as to provide additional space for the insertion of a match, andmeans controlled from said snu.-

sov

er lifting means'for providing a vent in the air- 4chest to reduce theair being blown past the top of the wick.

14. A burner for use vin oil stoves comprising a wick, a wick tube, aninteriorly disposed air distributor, a flame spreader extending over andspaced from the wick, a superposed vertically reciprocable snuffer whichin the lower position fits about the wick tube to prevent fiamepropagation, means acting from below the air distributor to lift thesnuffer to space it from the wick so that air may pass by the wick topropagate a flame, and means below the air distributor for keeping thesnufer in said lifted position.

15. A burner such as claimed in claim y14, having manually operablemeans to lift the snuffer to a still higher elevation to facilitateapplying a match to the wick.

16. A burner such as claimed in claim 14, having manually operable meansto lift the'snuffer to a still higher elevation to facilitate applyingar match to the wick, said manually operabley means also lifting theflame spreader to space it farther away from the wick.

17. A burner such as claimed in claim 14, wherein the snuffer holdingmeans includes a releasable latch, and the snuffer is disconnectiblyconnected thereto so as to be upwardly removable.

18. A burner for use in an oil stove comprising a Wick, a wick tube, anlinteriorly disposed air distributor` in the upper part of the wicktube,'a

flame spreader, an axially disposed guide tubel below the airdistributor, a rod slidably carried in the guide tube, and extending upthrough the flame spreader and the air distributor, and anl invertedcup-shaped member secured to the rod to move up and down therewith andadapted, when the rod is in its lower position, to extend down about theupper edge of the wick tube.

19. A burner for use in an oil'stove comprising a wick, a wick tube, aninteriorly disposed air distributor in the upper part of the wick tube,a flame spreader extending over and spaced from the wick, an axiallydisposed guide tube below the air distributor, a rod slidably carried inthe guide tube, and extending up through the flame,

spreader and the air distributor, an inverted cupshaped member securedto the rod to move up and down therewith and adapted, when the rod is inits lower position, to extend down about the upper edge of the wicktube, the lower end of the rod extending below the guide tube and havinga shoulder, and a releasable latch engageable with the shoulder to holdthe rod in an elevated position.

20. A burner'such as claimed in claim 19, having a rod lifter engageablewith the rod to raise it up to the latching position.

21. A burner for use in an oil stover comprising a. wick, a wick tube,an air distributor, a flame spreader extending over and spaced from thewick, a reciprocable snuffer having three positions, a lower or flamesnufling position adjacent the wick, an intermediate or burning positionspaced from the Wick and an elevated position for lighting, releasablemeans for holding it in the intermediate position, and manual means forraising it from the lower position to the intermediate position or fromthe intermediate position to the upper position.

22. In an oil stove, a wick type burner', means for producing forceddraft from below the burner to provide air for combustion, a verticallyreciprocable snufer above the Wick, means to hold the snuffer spacedfrom the wick to permit air to ticle to be heated above the snuffer-andclose to it when the snuffer is in positionA for burneroperation so thatthe heat is applied directly thereto, and means to disablethe snufferholding means whereupon the snuffer 4drops to cut off the air supplyfrom the wick.

23. An oil stove comprising a burner of the wick type, asuperposedvertically reciprocable snuffer which in the lower positionfits about the wickv tube of the burner to prevent ame propagation, ablower, a conduit from the blower to the burner, means to lift thesnuifer to space it from the wick so that air may pass by the wick topropagate a flame, means to keep the snuffer in the lifted position, andmeans responsive to cessation of blower operation to release the snufferholding means so that the snuffer drops to extinguish the iiame.

' 24. An oil stove comprising a burner of the wick type, asuperposed,'vertically reciprocable snuffer which in the lower positionfits about the wick tube of the burner to prevent ame propagation, ablower, a conduit from the blower to the burner, manually operated meansto lift the snuffer to space it from the ywick so that air may pass bythe wick to propagate a flame, latch means to keep the snufer in thelifted position, and meansy responsive to cessation of blower operationto release the snuffer latch so that the' snuffer drops to extinguishthe flame.

25. An oil stove comprising a burner of the wick type, a superposed,vertically reciprocable snuier which in the lower position fits aboutthe wick tube of the burner to prevent fiame propagation, a blower` aconduit from the blower to the burner, a screen interposed between theblower and burner to diffuse the air, means to lift the snuier to spaceit from the wick so that air may pass by the wick to propagate a flame,means to keep the snuffer in the lifted position, and means responsiveto cessation of blower operation to release the snuffer holding means sothat the snuffer drops to extinguish the flame.

26. A forced draft oil stove comprising a wick type burner, a motoroperated blower connected to the burner through a conduit to conduct airto the burner, a snuffer disposed above the burner and normally coveringthe wick, manual means for lifting the snuffer to space it from the wickso that air may pass by the wick to propagate. a flame, a snuiferretaining latch, a latch lifter, and motor operated means for renderingthe latch lifter non-functioning while the motor is in operation, thelast-mentioned means acting on stoppage of the motor to release thelatch so that the snuffer drops to extinguish the flame.

27. A forced draft oil stove comprising a wick type burner, a motoroperated blower connected to the burner through a conduit to conduct airto the burner, a snuifer -disposed above the burner and normallycovering the wick, manual means for lifting the snuffer to space it fromthe wick so that air may pass by the wick to propagate aflame, a snufferretaining latch, a spring urging the latch to latching position, aspring controlled member normally overcoming the latch spring toreleasev operating.

28. An oil stove having a front wall, a back wall, an apertured top,grates in the apertures, a burner under each grate, each burner having awickftube, air distributor and ame spreader, wick adjusters accessibleat the front of the stove, a blower, an air-chest connected to theblower and extending past the burners, air passages from the air-chestfor forcing air up past the Wick both inside and outside the Wick, ands/numng means blower operation.

RICHARD M. RUNGEQ v ERNEST B. PAscUccI.

